1970-1974 / Mopar E-Body / Torque Arm Rear Suspension

Description

> Description Delivering unmatched launch control, superior cornering stability, and modern suspension dynamics for your 70-74 E-Body (Challenger & Cuda). The Speedtech Extreme Torque Arm transforms your classic car into a high-performance machine. Engineered with optimized geometry, precision adjustability, and track-proven strength, this system puts power to the pavement with confidence and control. With fully adjustable suspension tuning, superior anti-squat geometry, and a robust, lightweight design, the Extreme Torque Arm is built to dominate on the street or at the track—without compromising ride quality. And one of the best parts about it – no bind like a 4-link gives you! We engineered the system to articulate in a bindless motion throughout the suspension travel, giving you a better quality ride all around. SUPERIOR TRACTION & LAUNCH PERFORMANCE The Torque Arm’s unique design plants the rear tires under hard acceleration, dramatically reducing wheel hop and improving straight-line launches. Optimized geometry keeps the suspension planted, giving you maximum grip when it matters most. PRECISION HANDLING & CONTROL Paired with a panhard or watts link setup, the Extreme Torque Arm enhances cornering balance by maintaining a consistent rear axle position. This allows for precise, predictable handling through every turn. FULLY ADJUSTABLE FOR ANY SETUP Built-in adjustability lets you fine-tune pinion angle, instant center location, and suspension preload to match your driving style—whether you’re cruising, drag racing, or autocrossing. TRACK-PROVEN STRENGTH Constructed from high-strength DOM steel tubing and CNC-machined mounting points, this Torque Arm is engineered to withstand extreme power levels and repeated hard launches without flexing or failure. FITMENT NOTES: Torque Arm suspension system integrates into the factory floor pan and frame rails, increasing chassis rigidity. Welding and fabrication is required for installation.  Small modifications for fitment with 1971-1974 inner rocker panels may be required. Tech Info Torque Arm Install Close × FREQUENTLY ASKED QUESTIONS (FAQ’s) IS THE SPEEDTECH TORQUE ARM SYSTEM SUITABLE FOR STREET AND TRACK USE? Absolutely. The torque arm system is engineered for high-performance street driving and track use, offering excellent traction, stability, and predictable handling under acceleration and braking. WHAT SIZE TIRES CAN I RUN WITH THE TORQUE ARM SYSTEM? Tire fitment will depend on the vehicle and wheel setup, but the system is designed to accommodate wide rear tires typically in the 315+ range, allowing for strong traction and performance. WHAT DIFFERENTIATES A TORQUE ARM FROM OTHER REAR SUSPENSIONS? A torque arm controls axle rotation more effectively than traditional leaf spring or 4-link setups, improving power delivery, reducing wheel hop, and increasing stability under load. WHAT MAKES SPEEDTECH’S TORQUE ARM SYSTEM UNIQUE? It features optimized anti-squat geometry, adjustability, and a rigid yet lightweight design. This results in better traction, improved corner exit performance, and a more connected driving feel. WHAT’S INCLUDED WITH THE SPEEDTECH TORQUE ARM SYSTEM? Torque Arm Assembly Rear Trailing Arms Crossmember / Mounting Structure Rear Sway Bar and Linkage Coilovers (if option chosen) Axle Mounting Components Applicable Hardware Related Products Quick view 1970-1974 Mopar E-Body Independent Rear Suspension View Product Quick view 1970-1974 Mopar E-Body Extreme Subframe View Product Quick view 1968-1974 GM X-Body Torque Arm Suspension View Product Quick view 1982-1992 GM F-Body Torque Arm Rear Suspension View Product <article